Oil-burner for furnaces.



N0. 698,36l. Patented Apr. 22, I902.

W. BOOTH.

OIL BURNER FDR FURNACES.

A i limion filed Oct. 14, 1901. (N o M o d a I.)

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NITE STATES PATENT OFFICE.

' WILLIAM BOOTH, OF SAN FRANCISCO, CALIFORNIA.

" OIL-BURNER FOR FURNACES.

SPECIFICATION forming part 0f Letters Patent N 0. 698,361, dated. April 22,1902.

Application filed October 14:, 1901- Serial No. 78,651. (No model.)

To all whom, it may concern:

Beitknown thatI, WILLIAM BOOTH, a cilizen of the United States, residing at and in the city and county of San Francisco, State of California, have invented certain new and useful Improvements in Oil-Burners for Furnaces; and I do hereby declare that the following is a full, clear, and exact description of said invention, such as will enable others skilled in the art to which it most nearly appertains to make, use, and practice the same.

My invention relates to that class of nozzles for spraying crude oil into'furnaces for the purpose of burning the oil as a fuel in which the oil and steam are admitted through separate passages intoa flat or rectangular casting and ejected therefrom in the form of spray by the force of the steam. of burners the horizontal slit or opening through whichthe mingled spray of steam and oil is ejected into the furnace has heretofore been made through the nosepiece in a line with the middle of the chamber, and it extended only across the front end of the nosepiece. My improvement consists inmaking the bottom of this chamber perfectly fiat in a horizontal plane and in placing the slit or opening in line withthe horizontal bottom of the floor; also, in extending the slot or opening backward alongeach side of the nosepiece for a short distance, so that the ejected spray will be thrown out in a fan shape and thus cover a greater area in the furnace; also, in providing an expansion-chamber in the steampassage before it reaches the pointwhere it comes in contact with the oil, thereby giving a more uniform pressure of steam in the steam-passage and mixingchamber, all as In this class central partition B, which extends entirely across the nozzle from its rear to near its front end; but it terminates at a short distance back from the front end, so as to form a chamber C. This provides an upper passage D and a lower passage E, leading through the nozzle from its rear end to the chamber in its forward end. The forward end of the nozzle has a narrow slit e extending horizontally across its front face and also to a short distanceback along its sides. The upper passage D forms the oil-passage, while the lower passage E forms the steam-passage. Oil is admitted into the upper passageD through an opening F, which is connected with a pipe which leads to the oil-supply, and steam is admitted at the rear end of the lower passage through the opening G. The oil flows from the oil-opening along the floor of the oil passage or partition until it enters the chamber C, where it meets the current of steam which comes through the lower passage. The chamber C in front of the partition B forms a mixing-chamber, where the steam and oil are intermingled, and from whence they are ejected through the narrow slit 6 by the steam-pressure in the form of a fan-shaped spray of oil, which when ignited will fill the entire furnace with flame. The slit e is placed low downpacross the front end of the nozzle and in a plane with the 'floor of the chamber C, so that the entire space of the chamber above the slit will form a confined mixingchamber, where the steam and oil are intermingled before being ejected as a spray. Just in front of the opening G through which the steam is admitted into the steam-passage I enlarge the passage, so as to form a chamber H, into which the steam enters before it passes into the narrow part of the steam-passage and "where it is allowed to expand before coming ICC use the air-supply, as it lightens the mixture of oil and steam and produces a more active spray.

In the construction of this burner I make the front end or nosepiece, which is subjected to the greatest heat, in a separate piece and provide flanges p 1.7, so that the nosepiece can be bolted onto the nozzle. It can thn be removed or renewed when desired.

Having thus described my invention, what I claim, and desire to secure by Letters Patcut, is-

1. An oil-bnrner of the class described for spraying crude oil into furnaces, consisting of a fiat rectangular casting provided with an oil-passage and adjacent steam-passage, separated by a partition; a nosepiece bolted onto the casting in front of the partition, the interior of said nosepiece formingachamber, a horizontal floor in said chamber and a slit in the forward end of the nosepiece in line with the floor of the chamber, substantially as described.

2. In an oil-burner of the class described for spraying crude oil into furnaces, a flat rectangular nosepiece secured to the front end of the burner; a rectangular chamber in said nosepiece, a horizontal slit entirely across the front and extending fora distance back along each side of the extremity of the nosepiece which projects into the furnace, substantially as described.

3. In an oil-burner for intermingling steam and oil and spraying them into a furnace, a rectangular chamber in the forward end of the burner or nozzle in front of the partition which separates the oil and steam passages, a horizontal floor in said chamber and a slitted opening in the front end of the nozzle in line with the floor of the chamber, substantially as described.

WILLIAM BOOTH.

\Vitnesses:

FANNY DALY, J. Y. RAMSEY. 

